Washington, December 27 (RHC)-- Jimmy Carter has so far been the only former U.S. president to confirm that he will attend President-elect Donald Trump's inauguration next month.  It remains unclear if any of the other American presidents would accept the Manhattan billionaire's invitation to be at the January 20 event, according to a report by Politico.

Former president Bill Clinton and his wife, Hillary, who lost the presidential race to Trump on November 8, have not yet confirmed whether they would attend the ceremony.  The report stated that some people in the Clinton camp have advised the pair against attending the ceremony.  On the other hand, some of the Clintons' aides have told them to attend as a sign of respect for a peaceful transition of power.  "It would be especially bad if the Clinton's did not attend, because it seems like they do not support the transition of power," a top Clinton donor told the newspaper.

Despite a brief exchange of amiable words following their face-off, Hillary Clinton and Trump still remain enemies.  Trump has threatened to jail the former secretary of state once he is sworn in.

Former president George H. W. Bush has already informed Trump's team that he would not show up due to his frail health, a spokesman for the 92-year-old said.  Bush is only four months younger than Carter, who is recovering from a metastatic skin cancer after undergoing months of treatment.

Former president George W. Bush has also kept mum on the matter with his spokesman Freddy Ford saying that the former Republican president would not give a firm answer until January.

During the primary campaign, both Bush and his father refused to officially back Trump, who managed to destroy the political career of former Florida Governor Jeb Bush, another member of the Bush family and once the favorite to win the Republican nomination.

All the living former U.S. presidents, including Clinton, Carter and both Bushes, attended President Barack Obama's inauguration in 2008.